PROVIDES SUPERIOR COOLING AND FREEDOM OF MOVEMENT DURING WORKOUTS IN WARM CONDITIONS. STAY COOL base layer is designed to keep you cool while exercising in warm conditions or indoor. The garments feature unique multi-channeled fiber constructions that effectively pull perspiration vapor off the body to keep it cool. A 3D construction ensures optimal freedom of movement and a perfect fit. In addition, STAY COOL base layer resists odors and stays cleaner longer.